eigenmann: the FRESHWATER FISHES OF BRITISH GUIANA 509 



length. Last dorsal spine equal to half the length of the head or a little longer. 

 Caudal rounded, or truncate in the middle, the outer rays prolonged. 



A large spot at the base of the caudal, another smaller one on the middle of 

 the sides; a black band from the eye to the upper lip, another to the edge of the 

 preopercular-subopercular suture, a third from the eye backward across the nape, 

 and a fourth from the eye to the caudal peduncle; sides with cross-bands; first 

 two or three dorsal membranes dusky, last dorsal and anal and middle caudal 

 rays cross-barred. 



Cichla Bloch and Schneider. 



"Luckanani," "Lucanari" and "Sun-fish." 

 Cichla Bloch and Schneider, Syst. Ichth., 1801, 340. 



Type, Cichla ocellaris Bloch and Schneider. 



Perciform; lateral line continuous in the young, usually interrupted in the 

 adult, forked at the base of the caudal. Soft dorsal, caudal, and anal scaled; gill- 

 arch normal, the rakers long and heavy; spinous and soft dorsal of nearly equal 

 extent, separated by a notch; anal spines three; each jaw with a band of broad 

 villiform teeth. 



It seems quite certain that there are three species of this genus in South 

 America. Steindachner ("Flussfische Siidamerika's," iv, pi. 1) figures ocellaris and 

 temensis a little over 100 mm. long. Both of these species are certainly different 

 from my specimens 116-137 mm. long, which are near enough Steindachner's 

 specimens in size to form a conclusive judgment. My specimens between 116-137 

 mm. are certainly identical with the school of young I obtained one night at the 

 Rockstone Stelling; my next larger ones differ distinctly in color, and approach 

 the ocellaris of Bloch and Schneider. 



It seems to me that the flavo-maculata, trifasciata, nigro-maculata, and argus 

 of Schomburgk are based on series of different-sized individuals in the order named 

 —the first being about 150 mm. long. I am in doubt about the identification of 

 Muller and Troschel's Acharnes speciosus. It is about 125 mm. long, and is cer- 

 tainly different in color from my specimens of that size. It resembles very closely 

 Steindachner's figure of ocellaris mentioned above. 



I must leave in abeyance the question whether or not there are two species 

 of Cichla in British Guiana and also the name by which they ought to be called. 



345. Cichla ocellaris Bloch and Schneider. (Plate LXIX, figs. 1-4.) 

 ? Cichla ocellaris Bloch and Schneider, Syst. Ichth., 1801, 340, pi. 66. — Muller 

 and Troschel, in Schomburgk, Reisen, III, 1848, 625 (all rivers). — Gunther, 



